Common causes of red lumps on baby’s face include atopic dermatitis, skin eczema, prickly heat, etc. Rare causes include bright red nevus and hemangioma. 1. Allergic dermatitis: caused by allergies, can also occur after mosquito bites, manifested as red papules above the skin surface, wind, itching obvious, should avoid scratching, under the guidance of the doctor for anti-allergy treatment. 2. Skin eczema: most common in infants within 6 months, caused by allergies, external environment and other factors stimulation, manifested as skin erythema, blisters, pimples, etc., part of the crust, peeling, under the guidance of the doctor should be comprehensive treatment. 3. prickly heat: mostly caused by environmental humidity, manifested as tiny blisters on the skin, with slight itching, can be used externally with talcum powder, keep the skin dry, and can disappear quickly. 4. Nevus erythematosus: Commonly found in newborn babies, it occurs on scalp, neck and face, manifested as light red or dark red plaque, with clear boundary, not higher than the skin, and fading away when pressed, and some of them can fade away on their own, while a few of them need surgical treatment. 5. Hemangioma: congestive plaques or strawberry-like plaques can appear on the skin, with clear boundary, higher than the skin, discoloration by pressure, some babies can subside on their own. In short, when the baby’s face appears red lumps, it is recommended to go to the dermatologist in time to clarify the cause of the disease and take targeted treatment.